"Cops that serve time in here don't do too well," warns a prison guard who's "helping" Chin (Daniel Dae Kim) find answers. Based on the exclusive first look at the episode below, that's a huge understatement.

"We really wanted to put [Chin] in a situation where he'd have to face his sins," executive producer Peter Lenkov previously told TVGuide.com. "Chin Ho was considered a dirty cop, so we put him in a situation where some people feel he belongs in prison. There are people who want to kill him because he put them in there. We're playing with scenes of retribution and revenge. It's life or death and it's a really good ride."

Although Chin wakes up inside the prison with no recollection of how he got there, things begin to become a bit clearer when he crosses paths with Det. Kaleo (Jason Scott Lee), the former Ochoa Cartel mole inside the Honolulu Police Department. As for why Chin's being punished? "Somebody ... wants you to suffer before you die," Kaleo says.